crawley



Oct. 9 1923.

M. C. CRAWLEY v TYPEWRITING- MACHINE Original F 2 Sheets-Sheet 1 iled 'Aug 29 f ,1

Li attomwxgo M. (I. CRAWLEY TYPEWRITING MACHINE Original Filed Aug. 29 1917 2 Sheets-Sheet 2 Patented Oct. 9, 1923.

UNITED STATES PATENT OFFICE.

MANSFIELD C. GRAWLEY, OF GROTON, NEW YORK, ASSIGNOR TO ADDOGRAPH COM- PANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

TYPEWRITING MACHINE.

Application filed August 29, 1917, Serial No. 188,774. Renewed March 27. 1923.

To all iii/10m it may concern Be it known that I, LTANSFIELD, C. CRAW- nnr, citizen of the United States. and resident of Groton, county of Tompkins, State of New York, have invented certain new and useful Improvements in Typewriting Machines. of which the following is a specification.

This invention has relation to that type of typewriting machines in which a power motor is employed, and the specific purpose of the present invention is to provide simple means whereby the line-spacing operations may be performed through the medium of said motor to thus relieve the operator of the manual work of performing line-spacing operations, the construction being such that the power devices may be put into operation through the medium of a key in the keyboard as more fully hereinafter set forth.

In the drawings, Fig. 1 is a front elevation of a portion of a platen carriage and the mechanism for rotating the platen for line spacing, parts of the platen carriage bein shown in sectional view;

Fig. 2 a horizontal sectional view of a portion of the platen carriage;

Fig. 3 a view similar to Fig. 1, showing the parts in the position which they occupy at the completion of the line spacing action;

Fig. i a transverse vertical sectional view of a portion of the platen carriage, taken on the line IVIV of Fig. 2; and

Fig. 5 is a perspective view of the means for connecting the line spacing device to the shaft.

Referring to the various parts by numerals, .1. designates the drive shaft which is designed to be continuously rotated by any suitable meanes. Rigidly secured to said shaft is a worm 2. It will, of course, be understood that the drive shaft will be suitably mounted in the typewriter frame. The platen carriage 3 may be supported in the typewriter frame in any suitable manner to permit it to have the usual transverse travel. In the typewriter frame, below the rear part of the carriage is mounted a rock shaft 4, said shaft being provided with forwardly extending substantially horizontal arms 5; and connecting the forward ends of these arms is a transversely extending line space bar 6. In the platen carriage is mounted a transversely extending rock shaft 7 to which is rigidly secured'a 'rearwardly extending crank arm 8. Connected to the free end of said arm is a depending link 9, which carries a roller 10 at its lower end, said roller being grooved and receiving within said groove the space bar 6. The roller 10 constantly engages and moves upon the lower edge of the line space bar 6, as shown clearly in Figs. 3 and 4t. Surrounding the rock shaft 7 is a coil spring 11, one end of which is secured to the rigid support of the rock shaft, the other end being secured to the crank arm 8 and maintaining said arm and the space bar 6 in their upper positions, as shown in Figs. 1 and 1. As the platen carriage moves transversely of the typewriter frame the roller 10 moves along the edge of the space bar, said roller remaining in engagement with the space bar throughout all of the travel of the carriage.

Formed integral with the space bar at the left-hand end thereof is a downwardly and outwardly inclined plate 12, said plate being formed with a downwardlv and outwardly inclined slot 13. Mounted upon a rigid bracket 14 is an upwardly extending vertically pivoted post 15, said post carrying at its upper end a forwardly extending substantially horizontal pin 16 which extends through the slot13 z-indisprovided with. an antifri ction sleeve which is adapted to engage the upper and lower walls of said slot. The post 15 is provided. at its lower end with a forwardly extending arm 17, and on the forward end of said arm is mounted a line space dog 18, said dog being provided'at its free end with a depending lug 19 which is adapted to be brought into engagement with. the threads of the worm 2. It is manifest that by depressing the dog to bring the lug 19 into engagement with the worm the said lug will be carried transversely toward the cen ter of the machine by the rotation of the worm, thereby turning the post on its pivot and causing the pin 16'to depress the space bar through its connection with the inclined cam surface formed by the lower wall of the slot 18. The slotted plate 12 is curved slightly in order to conform to the arc of travel of the pin 16. It is manifest that by rotating the post-15 and swinging the pin 16 toward the center of the machine the space bar 6 will be drawn downwardly as indicated in Fig. of the drawing. The downward movement of the space bar will rock the shaft 7 through crank arm 8 and link 9. The dog 18 is somewhat lons ly mounted on its pivot so that it may have a slight vertical movement, and surrounding its pivot is a spring QOthe free end of which is engaged with a. pin 2-1 on the upper side of the dog. Suitably supported in the frame directly over the worm. 25 is a guide plate 22, which is arranged substantially horizontally and is substantially equal in length to the worm. The dog 18 is formed at its inner free end with a rearwardly extending lug 23 which is adapted to engage with the upwardly extending flange 24- of the guide plate when. the dog is in its normal or retracted position, as shown clearly in Figs. 1 and 5. The guide plate, adjacent the upstanding stop flange 24l, is provided with a' slot 25 through which the lug on the dog'may pass. The dog 18 is also formed with a forwardly extending lug 2 6, sub stantially n'iidway between. the ends of the dog as shownclearly in Figs. 1 and 5.

' Mounted in the machine frame is a suitably arranged line space lever 27, the finger piece of which maybe in. any suitable location in the keyboard. At, the rear of the machine is pivoted a lever 28 a downwardly extending arm 29 which lies directly over the rear end of the line space lever 27. One arm of the lever 28 is connected to. an upwardly extcndnglatch bar 30 whose upper end is adapted .to engagethe forwardly extending lug- 26 of the dogv 18. The upper end of the latch 30 slotted and guided by a pin 31. ll hen the line space key is depressed the upper end of the line space lever 27 is raised, thereby moving the lever 28' and causing: the latch 30 to depress the dog' 18 and bring the. lug 19 there of into engagement with the worm 2. The downward movement of the dog carries the lug; 23 downwardly through the slot in the guide plate 22'. lVhen the dog has been sufhcicntly depressed to bring the lug .19 into engagement with the worm the lug 23' has pasesd below the guide plate 22 and will ride under said plate until the dog; 19 has been carried free of the worm. The leg 23 will be freed from'the guide plate/22 the instantthe lug; 19 is free of the worm; The spring 20 will thereupon lift the dog free of the worm and bring the lug on top of the guide plate 22. As the dog is returned to its normal "position the lug 23 rides over the guide plate until it contacts with the stop. flange 24:, whereupon it will be in a position to again move downwardlythrough theslot in the guide plate. As soon as the lug 19 is free of the worm the arm 17 is free, to return to its normal position. It is manifest that as the-spring 11 is constant- 137 tending to lift the space bar 6 the post 15 will .be' returned to normal position by means cf; the cam slot 13 and the-pin It It is manifest that an upward movement or"- formed with the space bar from the position shown in Fig: 3 will rotate the post 15 to the left, thereby withdrawing the dog 18 until its lug 23 contacts withthe stop flange Q4;- of the guide plate; This return movement of the dog will also bring the lug 26 into the path of the latch 30 so that it will be engaged and depressed upon the next operation of the said latch bar.

Rigidly connected to the rock. shaft 7. near one end thereof, is an upwardly extending crank. arm 32', to the upper end of which is pivoted a forwardly extending" pawl 33. The platen 36 is mounted on its shaft which is suitably journaled in the carriage frame and is provided" at its ends: with the usual hand knobs 37. On the platen shaft is rigidly secured. a ratchet wheel 3:4; which is adapted to be engaged. by the forward end of the pawl 33. Pivotally mounted on the platen shaft, adjacent the ratchet 34, is a swinging gauge plate 38 the rear edge of which is adapted to be brought under the forward end of the pawl 33 to regulate the point of engagement between the said pawl and the ratchet wheel. The gauge plate 38' is adjustable about the shaft 35 sothat by varying; its position with respect tov the head of the pawl: 33 the platen may be rotated one or two or more spaces, as desired. onnected to the gauge plate 38 is an upwardly extending operating arm by means of which the position of the gauge platemay be shifted. It is manifest that by adjusting the gauge plate so that the pawl 3-3 will engmge the ratchet, wheel near the end of its rearward stroke, the line space mechanism may be adjusted to move the platen one space; and that by adjusting the gaugepl'ate forwardly the distance of one ratchet tooth the platenmay be rotated two spaces at -each operation of the line spacing pawl 33.

From the foregoing. it is manifest that by depressing the line space key the dog 18 will be thrown into engagement with the worm; the line space bar 6 will be depressed and the platen rotated for line spacing tirough the operation of the link 9 rocl't shaft '7 and the line spa eing pawl. It is also manifestthat upon the completion of" the. line s movement all of the parts will instantly return to their normal inactive positions, ready for the next line movement.

It will be observed, therefore, that a feature of importance is that the power mechanism and the li-ne spacing mechanism shall remain interlocked during a. predetermined period" of time without regs d to what the oi ierator does with the linespacing key.

What I claimis 1.. 2'' line spacingdevice for a typewriting comp shaft, reciproca-hle ises and l rey op sed'means devices to the; shatt independently of the carriage for a predeterinined period.

2. A line spacing device for typewriting machines, comprising a platen, a shaft, reciprocable line spacing devices adapted to rotate the platen, and key-operated means for connecting the line spacing devices to the shaft independently of the carriage for a predetermined period.

3. A line spacing device for typewriting machines, comprising a continuously rotating shaft, a platen, a line spacing device for rotating said platen, key-operated means for connecting said line spacing device with said shaft independently of the carriage for a predetermined period, and adjustable means for varying the extent of rotation of the platen.

t. A line spacing device for typewriting machines, comprising a continuously operating shaft, a worm thereon and continuously rotated therewith, line spacing devices, and means for temporarily connecting said line spacing devices to said worm.

5. A line spacing device for a typewriting machine, comprising a continuously operat ing shaft, a worm thereon, a line space dog, key-operated means for moving said dog into engagement with the Worm, and means operated through said line spacing dog to rotate the platen for line spacing.

6. A line spacing device for a typewriting machine, comprising a continuously operating shaft, a worm thereon, a line space dog, key-operated means for moving said dog into engagement with the worm, means operated through said line space dog to rotate the platen for line spacing, and means for varying the extent of rotation of the platen through the line spacing devices. l

7. A line spacing device in typewritlng machines, comprising a continuously operating Worm, a line space dog, key-operated means for moving said dog into engagement with said worm, means for maintainingi said. dog in engagement with said worm for a predetermined distance along said worm, and line spacing devices connected to and operated by said dog.

8. A line spacing device for a typewriting machine, comprising a continuously operating shaft, a dog, key-operated means independent of the carriage for causing said dog to move longitudinally of said shaft, and line spacing devices connected to said dog.

9. A line spacing device for typewriting machines, comprising a continuously operating shaft, key-operated means adapted to be brought into engagement with said shaft and to be moved longitudinally thereof through the rotation of said shaft, and line spacing devices connected to said movable means independently of the carriage.

lO. A line spacing device for a typewriting machine, comprising a shaft, means adapted to be moved longitudinally of said shaft for a predetermined distance through the rotation thereof, key-operated devices to cause said means to engage said shaft, and line spacing devices connected to and operated by said movable means independently of the carriage.

11. A line spacing device for a typewriting machine, comprising a platen, a shaft, means adapted to be moved longitudinally of said shaft for a predetermined distance through the rotation thereof, key-operated devices to cause said means to engage said shaft, line spacing devices connected to and operated by said movable means independent of the carriage, and means for varying the extent of rotation of the platen through the line spacing means.

12. A line spacing device for a typewriting machine, comprising a platen, a continuously operating worm, a linespace dog, key-operated means for moving said dog into engagement With said worm, means for maintaining said dog in engagement with said worm for a predetermined distance along said worm, line spacing devices connected to and operated by said dog, and means for varying the extent of rotation of the platen.

13. A line spacing device for a typewriting machine, comprising platen, a line space bar, means connected to said bar and movable longitudinally thereof for rotating the platen for line spacing, a continuously operating shaft, means movable along said shaft and adapted to depress the line space bar, and key-operated means for temporarily connecting the movable means to said shaft.

14. A line spacing device for a typewriting machine, comprising a platen, a line space bar, means connected to said bar and movable longitudinally thereof for rotating the platen for line spacing, a continuously operating shaft, a worm thereon, a dog adapted to move longitudinally of the shaft, hey-operated means for moving said dog into engagement with said Worm, and means connected to said dog for depressing the line space bar. 1 i: 15. A line spacing device for a typewriting machine, comprising a platen, a line space bar, means connected to said bar and movable longitudinally thereof for rotating the platen for line spacing, a continuously operating shaft, a worm thereon, a dog adapted to move longitudinally of the shaft, key-operated means for moving said dog into engagement with said worm, means connected to said dog for depressing the line space bar, and means for varying the extent of rotation of the platen for line spacing.

16. A line spacing device for a typewriting machine. comprising a carriage. aplaten therein, a line space bar, a continuously lllt) thereon, ali-ne space do-g, key-operated means for moving said (log into engagement with; the said Worm, a plate to maintain said dog in engagen'ient with said: Worm: for a predetermined distance, means for causing the dog to move over said plate when said dog is released from the Worm; and return to its normal position, a line space bar, means connecting said dog to said bar to depress said bar as the dog is moved along I said: veorm, a carriage, a platen: therein, and

means on the carriage connected to the line space bar and operated by the depression of said harto rotate the platen for line spacing.

- 158, A. line spacing ecvi ce 'ltli typmvriting machinescom'pmslng a sh-alt,a Worm thereon, a lin spacede key-operated means for moving said doginto engagen'ient with the said; Worm, a plate to. maintainv said dcin engagement with said worm for a pred rmined distance, means for causing the dog to move over said plate when said dog is released from the Worm and return to its normal position, a line space bar, means connecting said: dog to said bill to depress said bill" as the dog is. moved along said Worm, a; carriage, a platen therein, means on the carriage connected to the line space bar and operated hv the depression of said. bar to rotate'tlie platen for line spacing, and means means for re .rnia

for: varyingtlie extent of rotation of the platen through they line spacing means.

19. A linespacing (.lB VJIQQ; for a typewritwing machine, comprising a platen, a com tinn n sly rotating Worm, a line space dog formed with a stop lug, a guide plate adiia cent said Worm and Provided with a slot through which the stop lug may pass and with, a stop at one end to hold the dog in its normal: at-rest position, key-operated means for moving the dog into engagement with the Worm and to bring the stop lug thereon under the; guide plate, means for lilting the dog above the guide plate when said dog has 'reache l' the end of the Worm, saiddog to its'normal position toingthe stop lug against the stop on the guide plate, andmeansconnectingthe dog to the platen to rotate said platen forlihe spacing.

20; A:;ll1l6 spacing device for typewriting machines comprising a continuously operating shaft, a platen a line space bar, keyectnated means 'to connect the line space bar to thesasid shaft to move said bar downwardly and then release it, and

means connected to said bar and adapted to:

engage the platen to rotate it for line spacing; 21. A line spacing device for typewriting machines comprising a continuously operating shaft, :1 platen carriage, a platen mounted therein, a line space bar, line spacing means on, the carriage to, engage said bar and move therealong, and: liey-operated means for teimporarily connecting the line space bar to the shaft to move said loar downwardly for line spacing movement.

22., In a typewriting machine, aline spacing mechanism embodying a ratchet device for rotating the platen and adapted to be actuated at any; point in the travel-of the carriage, a continnously driven power shaft, and key-controlled means to connect the li'nwspacing mechanism vvith said shaft irrespective of the position of the carriage, means acing provided: "whereby the actuation of the line -spacing mechanism automatically ce ses and returns to normal. when the line-spacing action is completedirrespective otthe position of the key.

23. A line-spacing device for typewriting machines comprising a shaft, means for contlm-ioasly rotating said shaft, a reciprocable line-space-rail extending the length of travel of the carriage, a platen, means connecting the line-space-rail to the platen whereby the platen may be rotated for line spacing movements, and keypperated means for connecting the line-spacemail to the shaft.

Qet. A line-spacing device for typewriting machines comprising a platen, a line-spacerail extending the length of travel of the carriage, means for connecting saidrail to said platen to rotate the platen for linespacing, a power means, and key-operated means connecting the line-space i'ail to the power means. 7 r

25. A line spacing device for typewriting machines comprising a platen, a line space-rail' extending the length of travel otthe carriage, means for connecting said rail to SZ-ltl platen to rotate the platen for linespacing, a power means, key-operatedmeans connecting the line space-rai l to the power means, and means for *arying the extent of rotation of the platen through the line spacing means.

26. A linespacingdevice for typeiviriting machine comprising a platen, a ratchet and pawl meansrlior rotating said platen for linespacing, a continuonslyoperating poiven driven shaft, and: key-controlled means for connecting the ratchet and; pawl mechanism tosaid shaft at all points in the travel. of the carriage.

27. A linespacingdevice or typeivriting machines comprising a continuously-operat: ing shaft, a platen, a line-spacing device for rotating said platen for line-spacing, keyoperated means for connecting the linespacing device With said shaft at all points in the travel of the carriage for giving to said line-spacing means a power movement, and adjustable means for varying the extent of rotation of the platen.

28. In a typewriting machine, a continuously-driven power-shaft, line-spacing means adapted to be operated by said powershaft, and key-controlled means for putting said line-spacing means into operative connection With said shaft, said line-spacing mechanism embodying; a rail-member extending the length of travel of the carriage and a roller-member adapted to relatively travel along said rail during the movement or" the carriage.

29. In a typewriting machine, a linespacing mechanism embodying a ratchet device for rotating the platen and adapted to be actuated at any point in the travel of the carriage, a continuously-driven power-shaft, and key-controlled means to connect the line-spacing mechanism With said shaft irrespective of the position of the carriage, means being provided whereby the actuation of the line-spacing mechanism automatically ceases when the line-spacing action is completed irrespective of the position of the key.

This specification signed this twenty-seventh day of August A. D. 1917.

MANSFIELD G. CRAVVLEY. 

